Created vector classes to simplify SSE code
Restructured nonbonded calculation to allow more efficient vectorization
Optimized algorithm for building neighbor list.
Parallelized the processing of exclusions for Ewald
Fixed an error in generating Python wrappers
Enabled the SSE version of SFMT
Minor optimizations to neighbor list construction
Do a more complex test to decide when to rebuild the neighbor list
Minor change to the neighbor list padding distance
Merge pull request #182 from peastman/master

Lots of optimizations to CPU platform